<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        body{
            margin: 0;
            padding: 0;
            background-color: black;
            font-size: 12px;
        }
        .iphone{
            width: 340px;
            height: 540px;
            background-color: #ffffff;
            position: absolute;
            left: 50%;
            top:50%;
            margin: -270px 0 0 -170px;

        }
    </style>
    <script type="text/javascript" src="../js/H5ComponentBase.js"></script>
    <link rel="stylesheet" type="text/css " href="../css/H5ComponentBase.css">
</head>
<body>
<div class="iphone"></div>
</body>
</html>